J.M. Park, W. Eversman

Two-dimensional sound propagation over an arbitrarily shaped barrier situated on a locally reacting infinite plane in a homogeneous medium is treated using the Boundary Element Method (BEM). The Boundary Integral Equation (BIE) is formulated so that the integral along an infinite homogeneous plane vanishes if the half space Greens function is chosen to satisfy the boundary condition of this plane. The integral in the resulting Greens function is transformed, using the steepest descent method, to a suitable form for effective numerical evaluation even for a relatively small distance between the image source and the receiving point. Comparison of the BEM results with experimental results by Keams and by Habault shows a good agreement of the sound field using the BEM.

DGLR/AIAA 14th Aeroacoustics Conference, 1992

Conference Paper

englisch

21,0 x 29,7 cm, 10 Seiten

DGLR-Bericht, 1992, 1992-03, DGLR/AIAA 14th Aeroacoustics Conference - Proceedings; S.457-466; 1992; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aeroacoustics, sound propagation, acoustic propagation, boundary integral method

Bibliothek

1992